#include<stdio.h>

void fun(int *num1, int *num2){
    *num1 = (*num1 + *num2) - (*num2 = *num1);
}

int main(){
    int num1, num2;
    scanf("%d %d",&num1, &num2);
    if(num1 == '' || num2 == ''){
        printf("Invalid Input");
        return 0;
    }
    fun(&num1, &num2);
    printf("%d %d", num1, num2);
}